/******************************************************************************
 * SAGE - Scalable Adaptive Graphics Environment
 *
 * Module   :  audioConverter.cpp
 *   Author   :   Hyejung Hur
 *   Description:   Code file for 
 *   
 * Copyright (C) 2004 Electronic Visualization Laboratory,
 * University of Illinois at Chicago
 *
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following disclaimer
 *    in the documentation and/or other materials provided with the distribution.
 *  * Neither the name of the University of Illinois at Chicago nor
 *    the names of its contributors may be used to endorse or promote
 *    products derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Direct questions, comments etc about SAGE to bijeong@evl.uic.edu or
 * http://www.evl.uic.edu/cavern/forum/
 *
***************************************************************************************************************************/

#include "audioConverter.h"

audioConverter::audioConverter() 
: totalBlocks(0), blockCount(0), writeMode(0)
{
#ifdef WIN32
   dataPos = -1;
#endif
}

audioConverter::~audioConverter()
{
}

int audioConverter::init(FILE* fp)
{
   fileID = fp;
   blockCount =0;
   //dataPos = -1;
   if(fileID == NULL) return -1;
   
   return 0;
}


/** Returns a tuple (nchannels, sampwidth, framerate, nframes, comptype, compname), 
    equivalent to output of the get*() methods ??? */
int audioConverter::getParams(int& nchan, long& samrate, int& nframes, sageSampleFmt& fmt)
{
   if(fileID == NULL) return -1;
   nchan = channels;
   samrate = sampleRate;
   fmt =sampleFmt;
   nframes = framesPerBuffer;   
   return totalBlocks;   
}


/** Rewind the file pointer to the beginning of the audio stream */ 
void audioConverter::begin()
{
   if(fileID) {
      rewind(fileID);
      blockCount =0;
   }
}
